Disruptive behaviour in childhood contributes to problems with the child’s social, emotional, family and academic functioning. The Child Youth and Emerging Adult Program at CAMH offers evidence-based behavioural treatments for children with disruptive behaviour and their parents. These treatments are offered within the context of a Canadian Institutes of Health Research (CIHR) funded project to understand which behavioural treatments work for which children, in order to develop more personalized approaches to treatment.